/*
 * Copyright 2020-2030 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gitee.minimalismstyle.fresh.common.security.intercept

import org.springframework.security.web.FilterInvocation
import org.springframework.security.web.access.intercept.FilterSecurityInterceptor

/**
 *  动态资源权限过滤器
 * @author maoxiaodong
 */
class DynamicFilterSecurityInterceptor : FilterSecurityInterceptor() {

    override fun invoke(fi: FilterInvocation) {
        if (fi.request != null
                && fi.request.getAttribute(FILTER_APPLIED) != null
                && isObserveOncePerRequest) {
            fi.chain.doFilter(fi.request, fi.response)
        } else {
            if (fi.request != null && isObserveOncePerRequest) {
                fi.request.setAttribute(FILTER_APPLIED, true)
            }
            val token = super.beforeInvocation(fi)
            try {
                fi.chain.doFilter(fi.request, fi.response)
            } finally {
                super.finallyInvocation(token)
            }
            super.afterInvocation(token, null)
        }
    }

    companion object {
        const val FILTER_APPLIED = "__spring_security_filterSecurityInterceptor_filterApplied_dynamic"
    }
}